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Showing 1 to 20 of 126 for “"Failure Analysis"”.
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Failure analysis of notched graphite-epoxy tubes
… to predict crack location, crack direction, and failure stress. The experimental failure modes of the tubes were determined using scanning electron microscopy and related to the stress field in the vicinity of the notch. The results showed that independent of loading the cracks usually initiated …
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Failure Analysis of Microflawed Ductile Matrix Materials
Made available in DSpace on 2014-12-12T00:25:56Z (GMT). No. of bitstreams: 1 7500305.pdf: 3802650 bytes, checksum: 876c0349fb28ea10d2c8184d230f6001 (MD5) Previous issue date: 1974
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Re-architecting the failure analysis supply chain
… excellence in customer returns management, failure analysis, and closed loop corrective action is taking on an increasingly important role as companies strive to improve their business processes, policies and supply chains to achieve a world-class leadership position in their industry. In …
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Progressive failure analysis of laminated composite structures
A methodology for progressive failure analysis is presented that is applicable to thin composite structures undergoing large deformations. The method is based on a nonlinear shell theory that accounts for geometric and material nonlinearities. An isoparametric, displacement-based finite element …
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Progressive Failure Analysis of Laminated Composite Structures
… composite structures requires a complete failure analysis, which includes both initiation and propagation of damage. In this work a progressive failure methodology is developed and implemented in the commercial Finite Element software package, Abaqus. Out of the numerous failure criteria …
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Progressive Failure Analysis of Double-Notched Composite Laminates
Failure analysis in composite laminates is traditionally modeled by the material property degradation method for the in-plane damage prediction which assumes that a damage material can be replaced by an equivalent material with degraded properties. The delamination in composites, on the other hand, …
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Failure analysis of a 30kHz ultrasonic welding transducer
… was to analyze 30 kHz multilayer PZT transducer failures caused by excessive amplitude (stress) and recommend ways to increase the lifespan. The 30 kHz transducer design being studied is produced by Herrmann Ultraschalltechnic GmbH and is currently used in production facilities around the world. …
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Failure Analysis and Casting a Gooseneck for Mashnee
… Herreshoff sailboat Mashnee recently failed. A failure analysis was conducted, and the failure mode identified. Steps were taken to mitigate this failure in a redesign of the gooseneck geometry, and the subsequent patternmaking, sandcasting, and finish machine was completed.
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Zirconium alloy getter bed air-ingress thermal failure analysis
… within the bed to extremely high levels. This failure mode, which could be caused by a line rupture, was modeled, analyzed, and a full-scale experiment was performed in the Tritium Science and Engineering group at Los Alamos National Laboratory to confirm the results that the primary bed …
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Study of photovoltaic (PV) module interconnections failure analysis and reliability
… part of the PV module assembly, and its failure can adversely affect the performance and reliability of the PV module. The interconnection failure has been mostly linked to the crack initiation and propagation in the solder joints used to connect the ribbon interconnection to the cell. …
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Failure analysis and design of a heavily loaded pin joint
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.
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Mechanical Properties and Failure Analysis of Cellular Core Sandwich Panels
… cores, elastic and elastic-plastic structural analysis was performed to evaluate the stiffness, strength, failure, and energy absorption characteristics of both the core and sandwich panels. The comparison made between triangular cores and hexagonal cores having the same cell size and relative …
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Nonlinear temperature dependent failure analysis of finite width composite laminates
… nonlinear elastic finite element stress analysis of finite width composite laminates including curing stresses is presented. Cross-ply, angle-ply, and some quasi-isotropic graphite/epoxy, laminates are studied. Curing stresses are calculated using temperature dependent elastic properties …
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Dynamics and failure analysis of architectural glazing subjected to blast loading
… and certification rather than to understand the failure modes and post-failure response of panels. The stress characteristics and the failure modes of such laminates need to be analyzed and understood.</p> <p>A three-dimensional nonlinear dynamic finite element model is used to study the dynamic …
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Failure Analysis of the Ulnar Collateral Ligament for Youth Baseball Pitchers
… this study were to (1) use kinetics from motion analysis and inverse dynamics to calculate the stress experienced by the ulnar collateral ligament (UCL) during a typical pitch cycle, (2) compare calculated maximum UCL pitching stresses to failure properties, and (3) investigate correlations …
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EMI failure analysis techniques and noise prediction for trace crossing split planes
… and have experience with a wide range of failure analysis methods and thus, be able to select the most appropriate ones for a given problem. The first three papers are from a series of articles, which explains a set of methods for the analysis of EMI failures. Each method is categorized …
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Reliability and failure analysis of composite beams and plates containing stress concentrations
… element method is extensively used. For stress analysis of isotropic beams under four point bending and composite plates under in-plane loading, a finite element analysis program F2DELAST based on two-dimensional elasticity theory was developed and verified with existing literature and also by a …
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Wedge failure analysis of anchored rock slopes subjected to surcharge and seismic loads
… or other discontinuities, several types of slope failure, such as plane failure, wedge failure, toppling failure, buckling failure and circular failure, are often observed. The present work focuses on the study of the wedge failure, which occurs as sliding of a mass of rock on two intersecting …
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